165057020 has 24 divisors (see below), whose sum is σ = 357802368. Its totient is φ = 63892800.

The previous prime is 165057007. The next prime is 165057031. The reversal of 165057020 is 20750561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132491 + ... + 133730.

It is an arithmetic number, because the mean of its divisors is an integer number (14908432).

Almost surely, 2^165057020 is an apocalyptic number.

165057020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165057020 is an abundant number, since it is smaller than the sum of its proper divisors (192745348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165057020 is a wasteful number, since it uses less digits than its factorization.

165057020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266261 (or 266259 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 165057020 is about 12847.4518874367. The cubic root of 165057020 is about 548.5438285061.

The spelling of 165057020 in words is "one hundred sixty-five million, fifty-seven thousand, twenty".